Coupling for basins, &amp;c.



1. H. GLAUBER, DECD. THE cmzENs sAvmas a must COMPANY, Execuon.

COUPLING FOR BASINS. c.

APPLICATION FILED DEC.18, 191|.

Pfiwntea July 18, 1916.

luveuto JOSEPH H.GLAU5ER, E

ugs.

JOSEPH I-I. GLAUBER, OF CLEVELAND, OHIO; THE CITIZENS SAVINGS & TRUSTCOMPANY EXECUTOR OF SAID GLAUBER, DECEASED.

ooUPLINe FOR. BAsINs, am.

Specification of Letters Patent. Patented July 1S, 1916.

Application filed December 18, 1911. Serial No. 666,495.

T0 all whom et may concern Be it known that I, JOSEPH H. GLAUBER,citizen of the United States, residing at Cleveland, in the county ofCuyahoga and State of Ohio, have invented' certain new and usefulImprovements in Couplings for Basins, &c., ofV which the following is aspecifica-tion.

My inventio-n relates to improvements in couplings for basins,.bath-tubs and other fixtures in the samel class, and the improvementresides more particularly in a coupling connection adapted to telescopetogether and be fixedly united by coupling means having the features ofconstruction substantially as herein shown and particularly pointed outin the claims.

In making a coupling connection between a service or supply pipe and afaucet mounted upon a basin or bath-tub, the common practice is toemploy a coupling tube which is separate from both the said pipe andfaucet, but teleseopically related thereto at one or both ends, to givea wide range of adjustability for different settings of the parts. Thegeneral practice also is to provide coupling nuts having slidablerelation withthe coupling tube.

In the present invention the coupling tube has threaded engagement withthe nut or a part thereof to immovably iix the tube to the member withinwhich it is telescoped. Now I do not lay claim to this threadedarrangement of parts broadly, except as it relates to and becomes anessential feature of the combination which includes my improved means ofinclosing and reinforcing the coupling tube where the walls thereof arereduced in thickness by the screw threads.

Primarily, my object is to provide asimple means to iixedly unite thetelescoped members by a threaded connection which will not only giveadjustability but also the maximum of strength and durability at thepoint of connection, particularly to avoid rupture from internalpressures and splitting or crushing from external causes, such as anaccidental blow.Y

In the accompanying drawings, Figure l is a side view, mainly insection, of a coupling tube attached to a service pipe, and showing myimprovement embodied therewith. Fig. 2 is a sectional view of myimproved coupling nut, and Fig. 3 is a side elevation and sectional viewof a faucet* shank mounted upon a portion of a bathtub. ig. 4 is a viewof a gasket and swivel rlng 1n section. Fig. 5 is a side elevationpartly in section of a modified form of coupling, and Fig. 6 a crosssection thereof on une 6 6, Fig. 5.

N o w describing a coupling embodying my improvement, wherein anabsolutely lixed or immovable connection. is obtained after the partshave been assembled, refer'- ence is made to Figs. l to 4, which show acoupling tube 2 having a relatively long leg 3 and a shorterportion 4 atright angles thereto.

The extremities of both the leg 3 and portion L are screw-threaded overa relativelyextended surface to permit ample accommodation fortelescopic adjustments, and the screw-threads 5 are preferably of pluralnumber corresponding in lead to the single and much heavier threads G onservice or supply pipe 7 and shank 8. Finer threads 5 are required inview of the smaller diameter of coupling tube 2 as compared with pipe 7and shank 8, and especially in view of the lighter' wall in the tube. f

' The means to unite coupling tube 2 with pipe 7 and shank 8 consists`of coupling nuts 9, which have internal threads 11 in their largerbores corresponding to the 'single threads 6, and ineror plural threads12 in their reduced portions 13. corresponding-to threads 5. The.separate threads in the opposite ends of the nut 9 are of course ofdifferent pitch, but have the same inclination or lead, which permitsscrewing of the nut upon the pipe 7 or shank 8 vafter coupling tube 2 issleeved within said pipe and shank and notwithstanding thatv the saidtube 2 is thenfixed or stationary. Inl fact it is essential that thecoupling nut shall rotate and move independently of tube 2 in makingconnections, and by having screwthreads of the same lead but ofdifferent pitch, the nut may be rotated freely although engaged withdifferent parts. The object in using the nut in this manner is of coursefirst of all to make a fixed union, and

secondly, to compress a gasket 14.' between the meeting surfaces at thejoin-t so as to effect a water-tight seal.

Coupling tube 2 is threaded at its ends over a relatively-extendedsurface to give the coupling member a wide range of adjustability andadaptation to variously-related service pipes and faucets. Obviously,the tube is therefore weaker in its walls where threaded than in itsunthreaded portion, and to protect and strengthen the threaded part ofthe tube where exposed, coupling nuts 9 are either provided with anintegral tubular extension 16 as shown in Fig. 1, or with a separatetubular extension 17 having independent engagement with coupling nut 9,which may be constructed to interlock therewith by any suitable means,such as a hexagonal or Octagonal portion 18, see Figs. 5 and G.Extensions 1G or 17 snugly fit the tube 2 and not only serve to concealthe threads 5 on coupling tube 2, but also protect and reinforce thisportion of the coupling tube where the stock is reduced by the threads5. Strengthening` or reinforcing of the member at its threaded portionwill be seen to be of decided advantage when the fact is considered thatcoupling tube 2 is necessarily made of light gage metal to give as largea waterway as possible therethrough and also to permit the pipe to beeasily bent for various adjustments, and which pipe, in any event, mustbe smaller in diameter than the bore of pipe 7 and the shank S of thefaucet or cock. The lower end of tube 2 where connected with pipe 7 isespecially exposed to danger as it usually extends through the floor orwall where experience has demonstrated that an accidental blow is apt tobe delivered and the tube crushed or split thereby. Tubes are oftenforcibly bent on curved lines between their ends in making fittings andin this event the reinforcing extension 16 prevents tube 2 from kinkingor abruptly bending in its thinner wall where threaded, especially ifbending is resorted to after the threaded end is telescoped within pipe7. It is well known that a thread or sharp cut in a pipe makes an easybreaking point.

Attention is directed to the fact that in order to obtain the resultsaforesaid, the extensions 16 or `17 are of smooth bore for part of theirlength and only a relatively small portion thereof is threaded to engagewith the tube and to permit the other end to cover' the threadsregardless of telescopic adjustments.

The employment of the threaded arrangement of parts to make absolutelyiixed and immovable connections as described meets a requirement for aconnection capable of withstanding excessive pressures and where thefixture is liable to sag for want of proper support; but where suchconditions exist it is also apparent that the need of protection in thereduced stock in coupling tube 2 Copies of this patent may be obtainedfor ve cents each, by addressing the mmissigney gf Patents,

where threaded, is also a factor, which is met by the inclosing 'andstrengthening sleeve or extension 16 or 17.

I/Vhat I claim is:

1. A tubular coupling member having multiple screw-threads over arelatively-extended surface at its end, in combination with a tubularconnection having a single external screw thread thereon of the samelead as said multiple screw-threads, and an internal bore totelescopically receive the threaded end of said member, and a couplingnut having a separate tubular extension provided over a relatively smallportion thereof with multiple screw-threads corresponding to thescrew-threads on said member and the said nut' having a singlescrew-thread corresponding to the screwt-hread on said connection, andsaid separate tubular extension having an interlocking portion for thenut and a smooth'bore to cover and protect the multiple threaded portionof said coupling member under different adjusted relations between theparts.

2. In a coupling basin or other laboratory fixture, a coupling nuthaving an enlarged portion provided with a bore having a singlescrew-thread, a separate relatively long tubular extension havingasmooth bore of less diameter than said threaded bore, and provided withan interlocking portion engaged with said nut and a relatively short andslightly reduced portion at the juncture of said extension and enlargedportion having plural screw-threads of the same lead as said singlescrew-thread.

8. A tubular coupling' member having similar multiple screw threadsexternally and smooth internally at opposite ends thereof, incombination with separate tubular connections for the respective ends ofsaid member having single screw threads externally of the same lead assaid multiple screw threads and bores internally adapted to receive theends of said coupling member, and coupling nuts having single screwthreads internally corresponding to the screw threads on bothconnections and provided with'separate relatively long smooth-boredextensions interlocked therewith in slidable relations and havinginternal multiple screw threads corresponding 'to the screws on thecoupling member', the smooth bored extension adapted to telescope overthe threaded tubular ends of said coupling member.

In testimony whereof I aflix my signature in presence of two witnesses.

JSEPH H. GLAUBER.

litnesses K R. B. Mossa, F. C. MUssUN.

Washington, D. C.

